DE1634377A1 - Method and device for pressing pipes and the like. - Google Patents

Description

Grs / Fr

December 5, 1967

Patent application

of the company

Westfalia Ironworks Union, 4628 Altlünen

Method and device for pressing Pipes and the like.

For crimping of tubes, it is usual first to prepare an open ditch, are inserted on the two planks scaffold walls in steel weldments ,, which are connected to the overlying cross connectors to one another ₀ to be compressed tube is located on a trolley on which either side of the backbone or can be moved on the horizontal rails. If a pipe section is pressed almost to the end of its length, a new pipe section is attached. Behind the new pipe section, a pressure or pressure plate is placed on which hydraulic cylinders engage. These hydraulic cylinders are guided in a known manner so that they can be longitudinally displaced laterally in the frame. They are supported on spaced abutments and press with their piston rods against corresponding receptacles on the pressure plate, which preferably protrude into the lateral support structures like an ear. Several pressure cylinders can be provided one above the other.

This arrangement and Arbeltweise means that the excavation must be considerably longer than the length of the pipe used; because the new pipe is attached when the old pipe is still partially looks out of the ground. The pressure plate is located behind the pipe and the pressure cylinders are located behind the pressure point; the minimum length of the pit must therefore be greater than be the dimension "pipe length + pressure plate + cylinder".

0098U / 0592

Grs / Fr "- 2 - 5, Dec. 1967

However, the length of the excavation is a decisive cost factor, and it is often necessary to be able to create excavation pits in order to use the pipe pressing process, which differ significantly from the aforementioned measure.

The object of the invention is therefore to find a method how the construction pit can be shortened through a more suitable method of operation? can be,,

The invention solves the problem posed in a method for pressing pipes, by means of a press frame below Use of press cylinders displaced in press frame parts, which are supported on alternating abutments, and the press progress gradually follow, in that the power transmission of the press cylinder to the pressure ring over part of the press path pulling and printing over part of the press path takes place in such a way, that the cylinder is initially arranged on the pipe side of the pressure ring and move the pressure ring pulling and then after a sufficient pressing stroke behind the pressing ring to move the rest of the stroke this pressing.

A device for carrying out the method consists in that the pressure ring has a tensile strength on its side facing the pipe Has means for connecting the pressure ring to the rear cylinders, while it is pressure-resistant on its side facing away from the pipe Has means.

As a further feature, tie rods or the like can be used as the tensile means.

Now it is possible with the help of the invention to arrange the cylinder on the pipe side of the pressure ring so that they overlap with the pipe to be pressed. Behind the printing line now no more space is required, so that at the beginning of the pressing of a new pipe, the cylinder within the

009844/0592 "",; *

BATH ORIGINAL

Grs / Pr · - 3. «'- ■ 5 * Dec. 1967

Length range of the pipe to be pressed via the traction means pulling the pressure forces on the pressure plate, which in turn pushes the pipe into the ground * the cylinders are moved from abutment to abutment until the pipe has penetrated sufficiently deep into the ground is to the cylinder on the back of the thrust ring to be able to start.

A further feature. According to the invention, a device for rotatable displacement is provided for the pressure ring in addition to or in addition to a known traveling device running on rails such that the pressure ring can be pivoted about a vertical axis _{or the like}

By this measure according to the invention it is achieved that for Transferring the cylinder, the pressure ring can be swiveled out in order to move the cylinders in their guides and, if necessary, « to turn around *. ~

If the cylinder is facing the pressure ring, so that the piston rod shows in the pressing direction, so carries the "piston rod on its End of a head on which the tie rods engage that pull the force transferred to the ears or lugs of the pressure ring. Naturally, the tie rods must always have at least the length of the fully extended cylinder with piston rod «

According to a further feature of the invention are at the end of the cylinder and / or at the piston rod end directly tensile or pressure-resistant coupling means with abutments on the frame and with the pressure ring provided in such a way that special tie rods ν are achieved can. The number of possible Öteck coupling devices or any other connecting means is too large to be described in detail to become"

OO 9 8 LU / 13 5 9.2 ^v:. BATH ORIGINAL

1R3A377 ^{GW 1926}

- 4 - 5o Dec. 1967

The invention achieves that the scaffolding does not need to be much longer than the longest pipe to be grouted » The shorter the press frames, the less excavation is required to create the working pit. Even more important is, however, that shorter trenches affect the environment less pull, are less disruptive to traffic and significantly reduce additional costs. This is especially true in densely populated Areas, busy roads, etc.

0 0 9 H 4 / I / 0 B 9 2

Grs / Pr - 5 - · 5ο Dec. I967

The drawing shows a pipe pressing device according to the invention.

In a construction pit 1, a scaffold 2 is used, which consists of the side walls j5 and> ', the yokes over cross 4 under, are connected to each other. The side walls are like that shown in section that one can see into the inwardly open Pführungstaschen 5 for the printing cylinder 6 wherein the pressure tubes attached to the side of a pressure plate 7 are visible.

On non Pictured trolley the last neuangesetzte tube 9 is moved so introduced in the skeleton - _t that it is aligned with the already compressed tube 10 and bears against this. Behind the new tube 9 is the pressure plate 7j, which with laterally protruding ears 8 fits into the pocket-like recesses 5 in which the rear cylinders or * pressure cylinders 6 are guided * These pressure cylinders 6 are supported at the rear with their bases 11 or corresponding approaches, Brackets and the like on abutments 12, which are attached in the pocket-like guides 5, preferably designed as welded metal sheets *

At the beginning of the compression, the cylinders 6 are behind the Pressure ring 7 arranged. Your piston rods 1> act on a cross yoke 14, on which the tie rods I5 attack and die.Kraft the cylinder 6 transferred to the ears 8 (nuts 16). If the stroke of the pressure cylinders is exhausted, they are retracted and attached to the next abutment 12 * This It works until the piston rod ends reach the end of the Have reached the construction pit. Then the pressure plate 7 of the Tie rods I5 released and moved back, pivoting expediently takes place around a vertical axis in order to facilitate the removal of the cylinders 6 and their assembly.

BATH 009844/0592

183 4377 Gw 1926

Grs / Fr - 6 - ■ December 5, 1967

If the pressure plate 7 is reattached, for example in the dot-dash position 16, the cylinders, acting as a simple pressure cylinder, (without the cross yokes 14 and the tie rods I5) »again supported on the abutments 12, the pressure ring 7 and thus the ^ ear 9 in the pressing device push forward.

Are provided in a manner not shown on the piston rod or on the cylinder end devices that both allow a pressure-resistant and tensile connection of these ends with the ears 8, preferably on both sides, the use of tie rods I5 can be dispensed with, and there is a further saving of space, because then in the drawn version on both sides of the cylinder Required space in stroke length is unnecessary.

009844/0592

Claims (1)

163 A3 ^: _7.3w 1926 Grs / Pr 5c Dec. 1967 Claims 1. Method for pressing pipes using a press frame using press cylinders displaced in press frame parts, which are supported on alternating abutments, gradually follow the pressing progress, thereby characterized that the power transmission of the Press cylinder (6) also the pressure ring (7) when arranging the Cylinder (6) on the tube side of the pressure ring (7) takes place pulling over part of the pressing path, so that the cylinder First move the pressure ring (7) by pulling, in order to apply the pressure ring to the other after a sufficient pressing stroke (7) to be implemented and then move this printing over the rest of the way. 2. Apparatus for performing the method according to claim 1, characterized in that between the pressure ring (7) and one of the two sides of the press cylinder (6) tensile means (14, 15 * 16) are switched on. 3. Apparatus according to claim 2, dadurc h ge kenn ζ e ic h η e t that the pressure ring (7) on its the tube (9) facing side tensile means (I5) and on its dem The side facing away from the tube has pressure-resistant means. ο Device according to claim 3 * characterized by dadurc h, that tie rods (I5) are used as tensile means « 5 "'Device for performing the method according to claim 1 and / or one of the Vorriclitungs claims 2 to 4, characterized in that the Druckririg (7) apart from, or in addition to, a chassis running on rails known per se, a device for rotatable displacement has such that it is about a vertical axis swiveling plumb line « 009 8 / α / ης92 _. -. * BAD ORiGtMM.- Ά - Grs / Fri - & - Dec. 5, 1967 6. Apparatus for performing the method according to claim 1 and / or one or more of claims 2 to 5, d a through characterized in that the frame (5) is only slightly longer than the longest to be pressed Tube (9) 7. Apparatus according to claim 2, characterized in that that the cylinder (6) on the pipe side of the pressure ring (7) with the cylinder end or the piston rod end are directly connected to the pressure ring (7) or the abutments (12). ^BAD ° 0098 ^ / -